E.g.f. satisfies A(x) = exp(x * (1 + x + x^2) * A(x^3/6)).

A367755

E.g.f. satisfies A(x) = exp(x * (1 + x + x^2) * A(x^3/6)).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =53a(5) =301a(6) =1951a(7) =13203a(8) =105673a(9) =919873a(10) =8472491a(11) =86799241a(12) =948033373a(13) =10924180853a(14) =135880443063

External references